.body {
    margin: 0;
    height: 100vh;
    width: 102vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4bc0c8, #c779d0, #feac5e);
}

.box {
    height: 80vh;
    width: 70%;
    max-width: 600px;
    background-color: #fff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: rgb(0 0 0 / 20%) 0px 2px 1px -1px,
        rgb(0 0 0 / 14%) 0px 1px 1px 0px, rgb(0 0 0 / 12%) 0px 1px 3px 0px;
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
    text-align: justify;
    color: #333;
    font-size: 17px;
    line-height: 1.7;
    letter-spacing: 0.34em;
    font-family: "楷体";
    overflow-y: scroll;
}

.box::-webkit-scrollbar {
    display: none;
    /* Chrome Safari */
}	
button {
width: 50px;
height: 50px;
display: table;
}


div.img {
margin: auto;
float: left;
width: 80px;
}


* {
    margin: 200;
    padding: 200;
}




.slipNav {
    width: 600px;
    height: 30px;
    margin: 30px auto;
}

.slipNav a {
    position: relative;
    float: left;
    width: 150px;
    line-height: 50px;
    text-align: center;
    font-size: 18px;
    color: #000;
    z-index: 1;
    font-family: "黑体";
}

.slipNav nav {
    position: relative;
    background-color: rgb(249, 249, 249);
    border-radius: 50px;
}

.slipNav nav::after {
    content: '';
    display: block;
    clear: both;
}

.slipNav nav :hover {
    color: #d889ab;
}

/* .selected {
    color: white !important;
} */

.line {
    position: absolute;
    top: 50px;
    left: 35px;
    /* 线的长宽 */
    height: 3px;
    width: 80px;
    background-color: #54a0ff;
    transition: all .3s;
}

.bgc {
    position: absolute;
    top: 0px;
    left: 25px;
    /* 线的长宽 */
    height: 50px;
    width: 100px;
    border-radius: 50px;
    background-color: #5ab7c9;
    transition: all .3s;
}


.switch_on {

    font-size: 16px;

    width: 40px;

    height: 50px;

    line-height: 50px;

}

.switch_on span,.switch_on input {

    width: 40px;

    height: 50px;

    position: absolute;

    background: none;

    -webkit-appearance: none;

}


.switch_on span.input.checked:before {

    border-color: #64bd63;

    box-shadow: #64bd63 0px 0px 0px 16px inset;

    background-color: #64bd63;

    transition: border 0.4s, box-shadow 0.4s, background-color 1.2s;

}

.switch_on span.input:before {

    content: '';

    width: 60px;

    height: 25px;

    border-radius: 20px;

    display: inline-block;

    position: absolute;

    top: 12.5px;

    left: 0;
    
    border: 1px solid #dfdfdf;

    box-shadow: #dfdfdf 0px 0px 0px 0px inset;
    
    background-color: #fdfdfd;

    transition: border 0.4s, box-shadow 0.4s;

    background-clip: content-box;

}


.switch_on span.input.checked:after {
    
    left: 35px;
}

.switch_on span.input:after {

    content: '';

    width: 25px;

    height: 25px;

    position: absolute;

    top: 12.5px;

    left: 0;  

    border-radius: 100%;

    background-color: #fff;

    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);

    transition: left 0.2s;  

}
